Improvement in water-pressure regulators



H. I. KING,

N.FETERS. PHOTO-UTHOGRAPHER. WASHINGTON. D. C.

"UNITED SrA'rns HIRAM T. KING, OF ROCHESTER, NEW YORK.

IMPROVEMENT IN WATER-PRESSURE REGULATORS.

. Specification forming part ofLetters Patent No. 176,791, dated May2,1876; application filed March 3, 1876.

regulating the pressure of the water .in service-pipes. It consists inthe employment of an adjustable spring in connection with a flexiblediaphragm, which is connected to the governing-valve, and of a peculiarconstruction of such valve.

The valve case or shell A is threaded through the bottom to receive thestem B of the valve-stock. The lower or outer end of this stock issomewhat reduced in diameter, and threaded to receive the pipe from themain. It may be provided with an octagonal section, as shown at b, uponwhich to apply a wrench. Its upper'e'nd is formed with a flanged cap orhead, h, through which there is no vertical opening. The stock isscrewed into the case from the open end before thediaphragm is applied.There are several small lateral openings, 0', near the head it throughthe stock. The enlarged portion or section below the head is providedwith an an nular vertically-sliding valve, G, which is nicely fittedthereto. There may be a slight groove turned next to the head h, intowhich is sprung a rubber or other cushion, a. The valve 0 is connectedon two opposite sides at g, by trunnions or otherwise, to the yoke 31 oftherstem F. This stem passes through the diaphragm D, to which it issecured by a suitable collar above and below, and the clamping-nut d.The diaphragm is attached to the open or upper end of the case A bymeans of the ring R and several clamping-screws. The lower ends of theposts P answer for two such bolts or screws. The upper portion of theseposts is threaded, as

shown, and the cross-bar G is fitted loosely upon them, and securedthereto by the setnuts a. Before the bar is placed in'position thespring S is. applied to the stem F, the lower end against or upon thenut d, and its upper end against the bar, as shown. The tension of thespring, or its force upon the diaphragm and valve, may be regulatedto-any desired extent, and with the greatest nicety, by the nuts n.

The openings 6 may be oval-shaped or oblong squares, 1f desired, thenarrow way being vertical, which would effect a greater change in theflow through the stock with agiven movement of the valve. The diaphragmmay be composed of any suitable material.

The inlet-pipe is attached at E, and the outlet or service pipe at J. Itwill be seen that when no cock on the service-pipes is open the pressureagainst the diaphragm will force it upward,.so as to close, or partiallyso, the valve, which reduces the pressure in the pipes within thebuilding. The relative pressure in the service-pipes with relation tothat in the main may be increased by increasing the tension of thespring, which is done by turning the nuts a farther down upon the posts,and vice versa.

To avoid mechanical fitting between the stock B and the annular valve 0the lower end of the latter may be provided with a rim projectinginward, and the former have a corresponding shoulder for this rim tostrike against. buch rim should be cushioned, the same as the upper endnow is, against the v head It. This would prevent the possibility ofleakage when the valve is forced up to cut off the passage of the water.It will be seen that the pressure of the water upon the valve, beinglateral, can have no tendency whatever tomove the valve vertically.

What I claim as my invention is 1. As an improvement in waterpressureregulators, the valve 0 and inlet and outlet water-passages, incombination with an adjustable spring, S, and flexible diaphragm, thevalve and diaphragm being connected together, whereby the slightestmovement of TENT OFFICE.

the latter shall produce a corresponding the outside of the seat, andconstructed to be movement of the valve, as and for the puroperatedsubstantially in the manner and for poses set forth.

2. In combination with a hollow cylindrical valve-seat, having its upperend closed by a Witnesses: head, h, and provided with lateral openings2', WM. S. LOUGHBOROUGH, the annular balance-valve 0, arranged upon B.O. WILLIAMS.

the purposes set forth.

- H. '1. KING.

